Unveil the Source of the World's Despair! Malt has vanished without a trace! The children are led by a mysterious voice into the forbidden cave, where they discover the Taranis - the powerful tank thought lost in the sea of clouds. Determined to save Malt, the children reboard the Taranis and set off on a daring mission to infiltrate the heart of the Berman Empire. However, the Crimson Knights stand in their way, strongest of the Berman!